Rubber, Tires, Foam & Elastomer Manufacturing worked example

Foam Bun Yield at 99% target foam bun yield rate: a worked example

What does the result look like when target foam bun yield rate reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when foam bun yield in rubber, tires, foam and elastomer manufacturing needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Rejected or defective foam buns: 8 count (unchanged)
  • Total foam buns produced: 250 count (unchanged)
  • Target foam bun yield rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Foam bun yield rate = foam bun yield count ÷ total foam bun yield population × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for foam bun yield rate, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for foam bun yield gap to target.
  • At this operating point the engine returns 8 count for foam bun yield count.
  • At this operating point the engine returns 250 count for total foam bun yield population.

How this compares with the baseline

  • Against the tool's baseline example, where target foam bun yield rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • A figure at this level is achievable when target foam bun yield rate is genuinely sustained, not just peaked for a shift. The rate is only as meaningful as what you count in the numerator; if you feed it defective buns it reports defect rate, and if you feed it good buns it reports pass rate, so label the input deliberately.

Results at a glance

  • Foam bun yield rate: 3.2 % (headline result)
  • Foam bun yield gap to target: 95.8 points
  • Foam bun yield count: 8 count
  • Total foam bun yield population: 250 count

Run it with your numbers

  • Every input above is editable in the live Foam Bun Yield calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.